312130422 has 80 divisors (see below), whose sum is σ = 733550400. Its totient is φ = 99184176.

The previous prime is 312130367. The next prime is 312130453. The reversal of 312130422 is 224031213.

312130422 is a `hidden beast` number, since 31 + 213 + 0 + 422 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 312130395 and 312130404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3950979 + ... + 3951057.

It is an arithmetic number, because the mean of its divisors is an integer number (9169380).

Almost surely, 2^312130422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312130422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (366775200).

312130422 is an abundant number, since it is smaller than the sum of its proper divisors (421419978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312130422 is an frugal number, since it uses more digits than its factorization.

312130422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 312130422 is about 17667.2131928043. The cubic root of 312130422 is about 678.3367815440.

Adding to 312130422 its reverse (224031213), we get a palindrome (536161635).

The spelling of 312130422 in words is "three hundred twelve million, one hundred thirty thousand, four hundred twenty-two".